CN114172783A - Intention-driven end-to-end arrangement system and method - Google Patents
Intention-driven end-to-end arrangement system and method Download PDFInfo
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
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Abstract
The invention belongs to the technical field of information communication networks, and discloses an intention-driven end-to-end arrangement system and method, which comprises the following steps: the intention layer is converted into arrangement strategy configuration required by the virtual network function configurator according to the input intention; the arranging layer manages and controls the virtual network, interacts with a VNF manager and a right manager, drives the VNF to instantiate, monitors the state of the VNF and re-allocates the virtual network function examples which do not meet the expected state; the perception control layer interacts with the infrastructure layer, network state data of the infrastructure layer are collected and transmitted to the meaning layer, and parameters are provided for strategy configuration and virtual network function instantiation; the infrastructure layer forms a resource pool through virtualization, and collects network state data to the perception control layer. The invention provides a universal end-to-end arrangement method for a heterogeneous network to achieve the function of meeting the user intention.
Description
Technical Field
The invention belongs to the technical field of information communication networks, and particularly relates to an intention-driven end-to-end arrangement system and method.
Background
At present, a revolutionary storm is developed in various industries due to the rising technology of wind cloud represented by software defined networking, cloud computing, virtualization, big data, artificial intelligence and the like. Software-Defined networking (SDN) provides Network programmability by separating the control plane from the data plane.
Intent-Driven Networks (IDN) is an emerging network paradigm that has been developed based on SDN. In IDN, a user need only express a need for network services without having to pay attention to the details of the specific network technology implementation to enable the user to obtain automated and reliable services. In other words, in IDN, the user only needs to be concerned about "what to perform" rather than "how to perform". Compared with the SDN, the IDN can autonomously realize the whole process from the collection and the analysis of the user intention to the automatic issuing with the aim of meeting the service requirements of the end user, and has less dependence on network management personnel. Meanwhile, the method has the characteristics of closed-loop verification and real-time dynamic modification, and has better robustness compared with an SDN.
In a conventional network architecture, network devices are various, a network administrator needs to manage network services according to specific configurations on different devices, the network services are diversified with the continuous increase of network scale, when a plurality of network devices are involved in network configuration change, the network administrator needs to master the conditions of the whole network and concentrate on changing the configuration, and the increase of the network scale can cause the increase of network configuration error rate.
The continued development of network function virtualization infrastructure (NFV) and Software Defined Networking (SDN) provides the required programmability, and generic x86 servers are replacing proprietary network devices, with virtual network functions replacing the functions of the proprietary devices. The deployment of the programmable infrastructure is a necessary prerequisite for the orchestration automation, but the infrastructure is not enough, and only a proper software system is combined with the programmable infrastructure, so that the initial intention input by a user can be converted into a complex network configuration, and the orchestration automation is realized.
The virtualization technology enables the deployment of network services to be simpler, and the automation level of network management is greatly improved. The process that can take advantage of automation is very wide ranging, covering all aspects from new service creation to service and network monitoring. In the past, creating new functionality required manual deployment of new physical devices, but now new functionality could be deployed by appropriate programming of the NFV/SDN infrastructure. Virtualization simplifies the process of network service deployment, but end-to-end service orchestration still requires complex configuration by administrators to implement.
In prior art 1, a human-computer interaction system is developed for inquiring network requirements of users, and supporting the input of the requirements in a natural language manner, so as to achieve the purpose of refining network configuration parameters. However, the method has the disadvantages that the configuration is too complicated and not intelligent in a human-computer interaction manner, which easily results in that the human-computer interaction cannot progress.
Through the above analysis, the problems and defects of the prior art are as follows:
(1) in the prior art 1, configuration in a human-computer interaction mode is too complicated and not intelligent enough, and in many cases, a user only pays attention to whether requirements can be met or not and does not know related knowledge, so that human-computer interaction cannot progress, and the intention of the user cannot be met.
(2) In the prior art 2, although the user intention is analyzed and configured by using the intention-driven network, the network management is performed only for the SDN network, and the problem of end-to-end arrangement of various existing heterogeneous networks cannot be solved.
(3) The intent-driven network field has not formed a universal end-to-end network orchestration system and unified methodology.
The difficulty in solving the above problems and defects is:
(1) with the continuous development of network architectures, the configuration among different network architectures is complex and diverse, a system aiming at a single network architecture cannot guarantee the same feasibility in other networks, and a universal end-to-end arrangement system is lacked, which can automatically complement parameter templates according to different requirements;
(2) the universal network has various resources, dynamic topology and large network scale, cannot effectively and timely configure complex network scenes, and lacks an intelligent and simple network management architecture to realize rapid deployment of network requirements;
the significance of solving the problems and the defects is as follows: the intention-driven end-to-end system and the intention-driven end-to-end method can understand the intention requirements of users, simplify the manual configuration process, provide a uniform resource management method for various heterogeneous resources, form a uniform methodology among different infrastructure service arrangements, and provide a new idea for solving the problems.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an intention-driven end-to-end arrangement system and method.
The present invention is thus embodied, in an intent-driven end-to-end orchestration system comprising:
the system comprises a meaning layer, an arrangement layer, a perception control layer and an infrastructure layer; all the layers cooperate with each other to jointly form an intention-driven end-to-end arrangement system, and after the intention input by a user is processed by an intention layer, a proper slice is selected according to the translated QoS index parameter and is sent to an arrangement layer for processing; the arranging layer selects a proper network service according to the description of the network slice, interacts with the VNF management module and instantiates the network service; the states of the infrastructure are collected in the perception control layer, so that the smoothness and stability of the network are guaranteed, and meanwhile, the routing can be selected again for the network service when the network fails, so that the stability of the network service is guaranteed; the infrastructure layer is responsible for providing the underlying physical devices, and needs to support virtualization to ensure that services can be deployed properly.
The intention layer is used for providing an interactive interface; meanwhile, the configuration is converted into the arrangement strategy configuration required by the virtual network function configurator according to the input intention;
the arranging layer is used for managing and controlling the virtual network, interacting with a VNF manager and a right manager, driving the VNF to instantiate, monitoring the VNF state and re-allocating the virtual network function examples which do not meet the expected state;
the perception control layer is used for interacting with the infrastructure layer, summarizing and transmitting network state data of the infrastructure layer to the meaning layer and providing parameters for strategy configuration and virtual network function instantiation;
and the infrastructure layer comprises physical equipment entities of an access network and a core network plane and is used for forming a resource pool through virtualization and collecting network state data to the perception control layer.
Further, the intention-driven end-to-end orchestration system comprises three roles of a user intention input person, a permission manager and a VNF manager;
the intention input person is used for interacting with the system through an interface provided by the intention layer and inputting the user intention;
the authority manager: the system is used for formulating a network access strategy and assisting a network management requester in identity authentication and authority identification;
VNF manager: for lifecycle management of VNFs by creating, destroying, monitoring VNF instance status and other means.
Further, the intent-driven end-to-end orchestration system further comprises:
the intention translation module is used for converting the intention of the irregular and implicit natural language representation input by the user into a regular and machine-recognizable language;
the strategy verification module is used for evaluating the matching condition of the strategy output by the intention translation module and the bottom layer resource, judging whether the resource requirement required by the intention is met or not, and also judging whether the strategy after the intention translation conflicts with the existing strategy or not;
configuring a sending module: the system is used for adjusting the generated specific configuration according to the expected format of the layout layer and sending the configuration to the layout layer;
and the VNF arrangement module is used for driving the virtual network function to perform instantiation deployment according to the virtual network function configuration transmitted to the arrangement layer by the intention layer.
Another object of the present invention is to provide an intent-driven end-to-end arrangement method applied to the intent-driven end-to-end arrangement system, the intent-driven end-to-end arrangement method comprising:
the perception control layer collects the state information of the infrastructure layer and forwards the state information to the meaning layer; the intention layer determines corresponding parameters based on the state information, converts user intention processing expressed by natural language into conflict-free strategy configuration based on the parameters, and issues the strategy configuration to the arrangement layer; the orchestration layer performs VNF instantiation according to the configuration and the current resource state.
Further, the intent-driven end-to-end orchestration method comprises the steps of:
step one, inputting a user intention in a voice, text or other form through a provided interactive interface, and converting the user intention into a normalized intention language; the user can express the self requirement in various forms without being limited to the complicated specific network configuration.
Step two, according to the corresponding service type in the normalized intention language, searching a corresponding mapping relation in an intention strategy library, converting the mapping relation into a quantifiable service quality index, and providing a corresponding virtual network according to the corresponding network service requirement; the user appeal can be evaluated more specifically and effectively, and matching is carried out between abstract user intention and specific network configuration.
Thirdly, supplementing key information required by the arrangement layer by inquiring the strategy library, and converting the key information into configuration which can be understood by the arrangement layer; inquiring whether the bottom layer resource can meet the mapping of the strategy, or carrying out conflict detection on the bottom layer resource and the existing strategy in the system, or inquiring whether the existing intention conflicts with the existing intention; the deployment with different intentions is independent, the performance of the deployed intentions is not influenced, the network stability is guaranteed, and the user experience is improved.
And step four, driving the virtual network function to instantiate by the configuration parameter according to the network service descriptor parameter provided by the upper layer, forming a service function chain and providing the required service arrangement for the user. The arrangement service ensures the specific implementation of the user intention, and the customized network service ensures the flexibility of network slice deployment, reduces the resource consumption and greatly improves the utilization rate of network resources.
Further, converting the user intent into a normalized intent language includes: outputting the user intention in the form of a field, a field attribute, an object, an operation and a result by taking a word as a basic unit;
a domain characterizing a scope to which the identity service belongs; attribute, representing and describing features belonging to a certain field; an object representing user-oriented nodes, connections and traffic flows; an operation to characterize a user-desired behavior; as a result, the state that the user wishes to achieve is characterized.
Further, in step three, the performing conflict detection with existing policies in the system includes:
inputting the translated strategy, judging whether the strategy conflicts with the existing strategy in the system, if so, carrying out conflict resolution, feeding back the conflict resolution to a user, and judging whether the user is satisfied; if the user is not satisfied, the strategy parameters are modified, and the input strategy is input again; and if the user is satisfied, the strategy is transferred.
Further, the third step further includes: and if the resources cannot meet the strategy mapping, or the strategies conflict or the intentions conflict, carrying out conflict resolution through conflict resolution and negotiation.
It is another object of the present invention to provide an internet network device incorporating the intent-driven end-to-end orchestration system.
It is another object of the present invention to provide a computer program product stored on a computer readable medium, comprising a computer readable program for providing a user input interface to implement the intent-driven end-to-end orchestration method when executed on an electronic device.
By combining all the technical schemes, the invention has the advantages and positive effects that: the intention-driven end-to-end arrangement system and the intention-driven end-to-end arrangement technology are widely applicable to multi-system networks including wired wireless networks such as software defined networks, data center networks and future mobile communication networks, a universal end-to-end arrangement method is provided for heterogeneous networks to achieve the function of meeting the intention of users, and the network deployment efficiency is greatly improved when managers still need to manually configure network parameters for the users.
The invention simplifies the operation of the manager for realizing the end-to-end network arrangement, provides an automatic method for realizing the intention for the common users who do not know the specific configuration of the system, reasonably makes a strategy according to the current resource state by the intention layer, effectively integrates heterogeneous resources, improves the utilization rate of network resources, ensures the high dynamic property and the expansibility of the intention layer by the interaction of the modules of the intention layer in an open interface mode, and is more rapid and accurate compared with the traditional service arrangement technology when processing a large amount of user intention input, thereby being beneficial to the development of an intention-driven network.
The invention compares the table with the prior art:
drawings
FIG. 1 is a schematic diagram of an intent-driven end-to-end orchestration system according to an embodiment of the present invention.
Fig. 2 is a flowchart of an intent-driven end-to-end orchestration method according to an embodiment of the present invention.
FIG. 3 is a flowchart of an intent guarantee technique provided by an embodiment of the invention.
Fig. 4 is a schematic layer provided in an embodiment of the present invention.
FIG. 5 illustrates an embodiment of the present invention in which the intent management module modifies a confirmed intent after the user reconfirms the intent.
Fig. 6 is a network descriptor diagram provided by an embodiment of the invention.
Fig. 7 is a network function diagram of the ground end at 5G according to the embodiment of the present invention.
FIG. 8 is a user-created customized network slice implementation user intent as provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In view of the problems of the prior art, the present invention provides an intent-driven end-to-end arrangement system and method, which will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an intent-driven end-to-end orchestration system provided by an embodiment of the present invention includes:
the system comprises a meaning layer, an arrangement layer, a perception control layer and an infrastructure layer;
the intention layer is used for providing an interactive interface; meanwhile, the configuration is converted into the arrangement strategy configuration required by the virtual network function configurator according to the input intention;
the arranging layer is used for managing and controlling the virtual network, interacting with a VNF manager and a right manager, driving the VNF to instantiate, monitoring the VNF state and re-allocating the virtual network function examples which do not meet the expected state;
the perception control layer is used for interacting with the infrastructure layer, summarizing and transmitting network state data of the infrastructure layer to the meaning layer and providing parameters for strategy configuration and virtual network function instantiation;
and the infrastructure layer comprises physical equipment entities of an access network and a core network plane and is used for forming a resource pool through virtualization and collecting network state data to the perception control layer.
The intention-driven end-to-end arranging system provided by the embodiment of the invention comprises three roles of a user intention input person, a right manager and a VNF manager;
the intention input person is used for interacting with the system through an interface provided by the intention layer and inputting the user intention;
the authority manager: the system is used for formulating a network access strategy and assisting a network management requester in identity authentication and authority identification;
VNF manager: for lifecycle management of VNFs by creating, destroying, monitoring VNF instance status and other means.
The intention-driven end-to-end arrangement system provided by the embodiment of the invention further comprises:
the intention translation module is used for converting the intention of the irregular and implicit natural language representation input by the user into a regular and machine-recognizable language;
the strategy verification module is used for evaluating the matching condition of the strategy output by the intention translation module and the bottom layer resource, judging whether the resource requirement required by the intention is met or not, and also judging whether the strategy after the intention translation conflicts with the existing strategy or not;
configuring a sending module: the system is used for adjusting the generated specific configuration according to the expected format of the layout layer and sending the configuration to the layout layer;
and the VNF arrangement module is used for driving the virtual network function to perform instantiation deployment according to the virtual network function configuration transmitted to the arrangement layer by the intention layer.
The intention-driven end-to-end arrangement method provided by the embodiment of the invention comprises the following steps:
the perception control layer collects the state information of the infrastructure layer and forwards the state information to the meaning layer; the intention layer determines corresponding parameters based on the state information, converts user intention processing expressed by natural language into conflict-free strategy configuration based on the parameters, and issues the strategy configuration to the arrangement layer; the orchestration layer performs VNF instantiation according to the configuration and the current resource state.
As shown in fig. 2, the intent-driven end-to-end editing method provided by the embodiment of the present invention includes the following steps:
s101, inputting a user intention in a voice, text, image or other form through a provided interactive interface, and converting the user intention into a normalized intention language;
s102, searching a corresponding mapping relation in an intention strategy library according to a corresponding service type in the normalized intention language, converting the mapping relation into a quantifiable service quality index, and providing a corresponding virtual network according to a corresponding network service requirement;
s103, supplementing key information required by the arrangement layer by inquiring the strategy library, and converting the key information into a configuration which can be understood by the arrangement layer; inquiring whether the bottom layer resource can meet the mapping of the strategy, or carrying out conflict detection on the bottom layer resource and the existing strategy in the system, or inquiring whether the existing intention conflicts with the existing intention;
and S104, driving the virtual network function to instantiate by the configuration parameter according to the network service descriptor parameter provided by the upper layer, forming a service function chain, and providing the required service arrangement for the user.
The method for converting the user intention into the normalized intention language provided by the embodiment of the invention comprises the following steps: outputting the user intention in the form of a field, a field attribute, an object, an operation and a result by taking a word as a basic unit;
a domain characterizing a scope to which the identity service belongs; attribute, representing and describing features belonging to a certain field; an object representing user-oriented nodes, connections and traffic flows; an operation to characterize a user-desired behavior; as a result, the state that the user wishes to achieve is characterized.
As shown in fig. 3, the conflict detection performed with the existing policy in the system according to the embodiment of the present invention includes:
inputting the translated strategy, judging whether the strategy conflicts with the existing strategy in the system, if so, carrying out conflict resolution, feeding back the conflict resolution to a user, and judging whether the user is satisfied; if the user is not satisfied, the strategy parameters are modified, and the input strategy is input again; and if the user is satisfied, the strategy is transferred.
Step S103 provided in the embodiment of the present invention further includes: and if the resources cannot meet the strategy mapping, or the strategies conflict or the intentions conflict, carrying out conflict resolution through conflict resolution and negotiation.
The technical solution of the present invention is further described with reference to the following specific embodiments.
Example 1:
the intention driving end-to-end system provided by the embodiment of the invention comprises an intention layer, an arrangement layer, a perception control layer and an infrastructure layer.
And the intention layer is used for completing the mapping from the intention to the strategy, providing a good input interface and an open interface mode for the user, supporting various input forms, expressing the personal appeal by the intention inputter and converting the user intention input into the strategy required by the virtual network function configurator.
And the arrangement layer is responsible for managing and controlling the virtual network, can drive the virtual network function to instantiate, monitors the virtual network function state, re-allocates the virtual network function instance which does not meet the expected state, allows a user to define the virtual network function model by user, and needs to provide detailed parameters required by the virtual network function.
And the perception control layer is responsible for interacting with the infrastructure layer, summarizing and transmitting the network state data of the infrastructure layer to the idea layer, and providing parameters for policy configuration and virtual network function instantiation.
The infrastructure layer comprises physical equipment entities of an access network and a core network plane, forms a resource pool in a virtualization mode, and collects network state data to a perception control layer.
The flow chart of the intent-driven network translation method of the intent-driven end-to-end technology provided by the embodiment of the invention comprises the following steps:
step one, after the intention inputter completes authentication, an intention is input through an interface or an open interface, and various forms of intention input including voice and text are supported.
Step two, when the intention inputter inputs the intention in a specific form, the intention inputter follows the normalized intention language of the field, the field attribute, the object, the operation and the result through the intention translation module, and the output is that the word is used as a basic unit, the field: identifying a scope to which the service belongs; the attributes are as follows: features described as belonging to a certain domain; object: user-oriented nodes, connections and traffic flows; the operation is as follows: describing a user's desired behavior, expressed in a pattern of "doing some action under some condition while respecting some constraint; as a result: describing the state that the user wishes to reach, and expressing by a clause of "expect to reach a certain state" or "avoid reaching a certain state";
and storing the corresponding mapping relation in the intention strategy library according to the service type corresponding to the intention translation module, so that the mapping relation is converted into a QoS index which can be further quantized, and providing a corresponding virtual network function according to the corresponding network service requirement. The key information needed by the arrangement layer is supplemented by inquiring the strategy library, so that the arrangement layer can understand the configuration.
And step three, performing conflict detection on the mapped strategy and the existing strategy in the system, inquiring whether the existing intention conflicts with the existing intention, and if so, resolving the conflict between the strategies through conflict resolution.
And step four, the generated conflict-free configuration is issued to the arrangement layer through the configuration issuing module.
And step five, driving the virtual network function to instantiate through the configuration parameter according to the network service descriptor parameter provided by the upper layer, forming a service function chain, generating a new slice, and providing the required service arrangement for the user.
And step six, the user performs rerouting, so that the optimal path selection can be performed on different flows according to the input intention of the intention inputter, and end-to-end arrangement is completed.
The general architecture from the intention driving end to the end system provided by the embodiment of the invention is used for layering the system according to the idea of layered management, namely an intention layer, a layout layer and an infrastructure layer, so that only necessary data interaction between the upper layer and the lower layer is ensured, the interference is reduced, the independence between the layers is increased, and the function of arranging service from the intention input of a user to the end is realized, and the system comprises the following modules:
the intention translation module is provided with a front-end interface, is used for collecting intention texts input by a user and can also complete front-end data input by opening a REST interface. The intention translation module completes two functions of inputting intention and adjusting intention, and interfaces with the intention management module comprise acquisition of an intention list, intention translation, intention modification, intention deletion, intention storage, intention submission and intention adjustment interface.
And the intention management module is mutually communicated with each module of the intention layer, and all requests need to be processed through the module. And the intent translation module is connected with the intent translation module and further converts the service type corresponding to the intent translation module into a quantized QoS index. The intention translation module can query relevant data (obtain specific information needed by an address list and the like) through the intention management module, and the intention management module firstly sends a request to the policy base and waits for a result returned by the policy base for further processing.
The user input intention cannot cover all indexes required by the strategy configuration, part of data required by the strategy configuration needs to be provided by the strategy configuration library, and the strategy configuration library is responsible for accessing some template information, recording the result of each request and caching in the database, so that the same request can be directly taken out of the database next time, and the query time cost is reduced.
The strategy library also has some templates, when some conditions are hit, the templates can be used for rendering, such as QoS indexes, scenes, VNFs, link information and the like, the database searches according to the fields, and after the fields are matched, the strategy configuration can be completed only by filling partial fields in the content to be analyzed. For example, the QoS index and other indexes can be mapped to change the abstract index into concrete data. The policy repository has a number of pre-defined service chain templates, which specify which VNFs to use, the configuration of parameters required by these VNFs, and how the VNFs interact with each other.
The resource manager is responsible for maintaining system resources, storing link state information such as bandwidth, time delay and the like, and providing some data supports during strategy verification to judge whether basic requirements can be met and find out proper path guarantee intents for the strategy to execute.
And the strategy verification module guarantees that the intention can be executed according to what the user expects, and when the strategy configuration of the intention analysis conflicts, conflict resolution and conflict negotiation are carried out, so that the user intention is executed on the basis of the original strategy. After the configuration is generated, whether the requirements are met or not is judged through a user feedback path, or a machine learning mode is used for replacing manual decision making.
The total flow of the policy verification comprises:
step one, after a strategy analysis module receives a strategy of intent translation, judging whether the strategy conflicts with the existing strategy or not;
step two, when the resources are not matched or conflict with the existing strategy, conflict negotiation or conflict resolution is carried out, otherwise, the conflict is directly sent to a feedback module;
step three: after conflict resolution, the system asks the user through a feedback module whether the result is satisfactory.
Step four: when the user is not satisfied with the result, the user is prompted to modify the strategy parameters and reenter the strategy input module. For example, the user, upon receiving negative feedback, will be prompted to enter a template form to update his/her selection. The new policy will then re-perform the process of conflict detection in order to guarantee no conflicts with the existing policy.
The VNF management module is responsible for lifecycle management of the VNF, and may create, destroy, monitor a VNF instance state, and ensure that the VNF can be executed according to an expected target, and when the VNF does not meet the expected target, for example, when a failure occurs, the VNF instance may be redeployed to ensure that the VNF function persists.
The intention layer diagram 4 has a front-end interface for collecting intention texts input by a user, and can also complete front-end data input by opening a REST interface. The intention input person can complete the functions of acquiring an intention list, modifying the intention, deleting the intention, saving the intention, submitting the intention and adjusting the intention through a front-end interface.
And the meaning layer analyzes the user request, matches a proper scene according to the user request, queries a strategy library to search a corresponding NST template for the user request, supplements the NST template according to the QoS requirement of the user, and sends a request to the OSM open interface after the supplement is finished. When the user is not satisfied with the results of the intent translation, the user may modify the intent through a query, as shown in the following figure, after which the intent may be resubmitted.
After the user reconfirms the intention, as shown in fig. 5, the user can submit the intention by clicking the confirmation, and after the intention is resubmitted, the intention management module will modify the confirmed intention, and the configuration parameters for the intention are regenerated and input into the arrangement layer through the configuration issuing module.
According to different network scenes, in the hierarchical layer, an administrator can make different network slice templates (NetSlice templates) to meet the user requirements of different scenes. The form of the cutting template in the layout layer is mainly made through a yaml file. Both the service scenario and the QoS index may be specified in NST. The specific format is as follows:
when a VNF manager formulates NST, it needs to formulate a Service type for a slice, what Network Service (Network Service) the Network slice needs to be composed of, how a connection relationship between Network services is established, and finally, it needs to specify a QoS index of the Network slice.
From the above description, it can be known that the establishment of the Network slice requires a Network Service as a support, and the Network Service requires a Network Service Descriptor (NSD) to be formulated, and the NSD is also described in the yaml format, and the specific format is as follows:
the network descriptor is shown in the form of fig. 6: two parts are included in the NSD: respectively, a Virtual Network Function (VNF), a virtual connection (VL), i.e. a network service descriptor, needs to specify which VNFs need to be used for the service, and how the connection relationships between VNFs are.
More specifically, the VNF is described by a VNF Descriptor (VNFD), and the VNFD needs to specify information such as a required image, the number of virtual CPUs, and an internal interface. The specific format is as follows:
the VNF management module needs to provide a basic image, i.e., an image required by upper layer instantiation, and takes a network function of a 5G ground side as shown in fig. 7, for example, the 5G network functions that the VNF management module needs to provide include a Network Repository Function (NRF), an access and mobility management function (AMF), a Session Management Function (SMF), a Unified Data Repository (UDR), a Policy Control Function (PCF), a Unified Data Management (UDM), a Network Slice Selection Function (NSSF), an authentication server function (AUSF), a User Plane Function (UPF), and a MongoDB, allowing independent deployment and development at each function, so that the network function is flexibly and efficiently deployed in an NFV environment.
As shown in fig. 8: the arrangement layer is connected to a VNF manager through a VIM account to manage the VNF manager, after the arrangement layer receives an instantiation request of the idea layer, the VNF manager is controlled to carry out specific instance deployment, the specific slice instance can be seen to be successfully deployed in a VNF management module, and finally, a network slice is created for a user according to input intentions.
Therefore, the user intention-logic strategy is filled, the network slice template of the arrangement layer is matched, the physical strategy is generated and is sent to the VNF management module to instantiate the VNF and the virtual network link, a customized network slice is created for the user, and the user intention is realized.
It should be noted that the embodiments of the present invention can be realized by hardware, software, or a combination of software and hardware. The hardware portion may be implemented using dedicated logic; the software portions may be stored in a memory and executed by a suitable instruction execution system, such as a microprocessor or specially designed hardware. Those skilled in the art will appreciate that the apparatus and methods described above may be implemented using computer executable instructions and/or embodied in processor control code, such code being provided on a carrier medium such as a disk, CD-or DVD-ROM, programmable memory such as read only memory (firmware), or a data carrier such as an optical or electronic signal carrier, for example. The apparatus and its modules of the present invention may be implemented by hardware circuits such as very large scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, or programmable hardware devices such as field programmable gate arrays, programmable logic devices, etc., or by software executed by various types of processors, or by a combination of hardware circuits and software, e.g., firmware.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An intent-driven end-to-end orchestration system, comprising:
the intention layer is used for providing an interactive interface; meanwhile, the configuration is converted into the arrangement strategy configuration required by the virtual network function configurator according to the input intention;
the arranging layer is used for managing and controlling the virtual network, interacting with a VNF manager and a right manager, driving the VNF to instantiate, monitoring the VNF state and re-allocating the virtual network function examples which do not meet the expected state;
the perception control layer is used for interacting with the infrastructure layer, summarizing and transmitting network state data of the infrastructure layer to the meaning layer and providing parameters for strategy configuration and virtual network function instantiation;
and the infrastructure layer comprises physical equipment entities of an access network and a core network plane and is used for forming a resource pool through virtualization and collecting network state data to the perception control layer.
2. The intent-driven end-to-end orchestration system according to claim 1, comprising three roles of user intent inputter, rights manager, VNF manager;
the intention input person is used for interacting with the system through an interface provided by the intention layer and inputting the user intention;
the authority manager: the system is used for formulating a network access strategy and assisting a network management requester in identity authentication and authority identification;
VNF manager: for lifecycle management of VNFs by creating, destroying, monitoring VNF instance status and other means.
3. The intent-driven end-to-end orchestration system according to claim 1, further comprising:
the intention translation module is used for converting the intention of the irregular and implicit natural language representation input by the user into a regular and machine-recognizable language;
the strategy verification module is used for evaluating the matching condition of the strategy output by the intention translation module and the bottom layer resource, judging whether the resource requirement required by the intention is met or not, and also judging whether the strategy after the intention translation conflicts with the existing strategy or not;
configuring a sending module: the system is used for adjusting the generated specific configuration according to the expected format of the layout layer and sending the configuration to the layout layer;
and the VNF arrangement module is used for driving the virtual network function to perform instantiation deployment according to the virtual network function configuration transmitted to the arrangement layer by the intention layer.
4. An intent-driven end-to-end arrangement method applied to the intent-driven end-to-end arrangement system according to any one of claims 1 to 3, wherein the intent-driven end-to-end arrangement method comprises:
the perception control layer collects the state information of the infrastructure layer and forwards the state information to the meaning layer; the intention layer determines corresponding parameters based on the state information, converts user intention processing expressed by natural language into conflict-free strategy configuration based on the parameters, and issues the strategy configuration to the arrangement layer; the orchestration layer performs VNF instantiation according to the configuration and the current resource state.
5. The intent-driven end-to-end orchestration method according to claim 4, comprising the steps of:
inputting a user intention in a voice, text, image or other form through a provided interactive interface, and converting the user intention into a normalized intention language;
step two, according to the corresponding service type in the normalized intention language, searching a corresponding mapping relation in an intention strategy library, converting the mapping relation into a quantifiable service quality index, and providing a corresponding virtual network according to the corresponding network service requirement;
thirdly, supplementing key information required by the arrangement layer by inquiring the strategy library, and converting the key information into configuration which can be understood by the arrangement layer; inquiring whether the bottom layer resource can meet the mapping of the strategy, or carrying out conflict detection on the bottom layer resource and the existing strategy in the system, or inquiring whether the existing intention conflicts with the existing intention;
and step four, driving the virtual network function to instantiate by the configuration parameter according to the network service descriptor parameter provided by the upper layer, forming a service function chain and providing the required service arrangement for the user.
6. The intent-driven end-to-end orchestration method according to claim 5, wherein the converting the user intent into a normalized intent language comprises: outputting the user intention in the form of a field, a field attribute, an object, an operation and a result by taking a word as a basic unit;
a domain characterizing a scope to which the identity service belongs; attribute, representing and describing features belonging to a certain field; an object representing user-oriented nodes, connections and traffic flows; an operation to characterize a user-desired behavior; as a result, the state that the user wishes to achieve is characterized.
7. The intent-driven end-to-end orchestration method according to claim 6, wherein in step three, the detecting of conflicts with existing policies in the system comprises:
inputting the translated strategy, judging whether the strategy conflicts with the existing strategy in the system, if so, carrying out conflict resolution, feeding back the conflict resolution to a user, and judging whether the user is satisfied; if the user is not satisfied, the strategy parameters are modified, and the input strategy is input again; and if the user is satisfied, the strategy is transferred.
8. The intent-driven end-to-end orchestration method according to claim 5, wherein step three further comprises: and if the resources cannot meet the strategy mapping, or the strategies conflict or the intentions conflict, carrying out conflict resolution through conflict resolution and negotiation.
9. An internet network device incorporating an intent-driven end-to-end orchestration system according to any one of claims 1-3.
10. A computer readable storage medium storing a computer program which, when executed by a processor, causes the processor to perform the intent-driven end-to-end orchestration method of any one of claims 4-8.
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